Lee Neck Sizing vs. Full Length, Which is Better?

This is the follow up to my how to video about the lee Neck size only Die. I shot 4 groups, the first two were consecutively with new first followed by Neck only. I let the gun cool for 20 minutes and then started with Neck only, ending with new. Barrel heat was tested both ways for this test at a 100 yard range from a bipod and rear sand bag off a benchrest. Interesting results!
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